EP1760264B1 - Turbine engine component with a cooling microcircuit and corresponding manufacturing method - Google Patents

Turbine engine component with a cooling microcircuit and corresponding manufacturing method Download PDF

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Publication number
EP1760264B1
EP1760264B1 EP06254317.8A EP06254317A EP1760264B1 EP 1760264 B1 EP1760264 B1 EP 1760264B1 EP 06254317 A EP06254317 A EP 06254317A EP 1760264 B1 EP1760264 B1 EP 1760264B1
Authority
EP
European Patent Office
Prior art keywords
airfoil
forming
cooling microcircuit
turbine engine
microcircuit
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Revoked
Application number
EP06254317.8A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP1760264A2 (en
EP1760264A3 (en
Inventor
Om Parkash Sharma
Edward F. Pietraszkiewicz
Frank Cunha
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
RTX Corp
Original Assignee
United Technologies Corp
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
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Application filed by United Technologies Corp filed Critical United Technologies Corp
Publication of EP1760264A2 publication Critical patent/EP1760264A2/en
Publication of EP1760264A3 publication Critical patent/EP1760264A3/en
Application granted granted Critical
Publication of EP1760264B1 publication Critical patent/EP1760264B1/en
Revoked legal-status Critical Current
Anticipated expiration legal-status Critical

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01D—NON-POSITIVE DISPLACEMENT MACHINES OR ENGINES, e.g. STEAM TURBINES
    • F01D5/00—Blades; Blade-carrying members; Heating, heat-insulating, cooling or antivibration means on the blades or the members
    • F01D5/12—Blades
    • F01D5/14—Form or construction
    • F01D5/20—Specially-shaped blade tips to seal space between tips and stator
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01D—NON-POSITIVE DISPLACEMENT MACHINES OR ENGINES, e.g. STEAM TURBINES
    • F01D5/00—Blades; Blade-carrying members; Heating, heat-insulating, cooling or antivibration means on the blades or the members
    • F01D5/12—Blades
    • F01D5/14—Form or construction
    • F01D5/18—Hollow blades, i.e. blades with cooling or heating channels or cavities; Heating, heat-insulating or cooling means on blades
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23P—METAL-WORKING NOT OTHERWISE PROVIDED FOR; COMBINED OPERATIONS; UNIVERSAL MACHINE TOOLS
    • B23P15/00—Making specific metal objects by operations not covered by a single other subclass or a group in this subclass
    • B23P15/04—Making specific metal objects by operations not covered by a single other subclass or a group in this subclass turbine or like blades from several pieces
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01D—NON-POSITIVE DISPLACEMENT MACHINES OR ENGINES, e.g. STEAM TURBINES
    • F01D21/00—Shutting-down of machines or engines, e.g. in emergency; Regulating, controlling, or safety means not otherwise provided for
    • F01D21/003—Arrangements for testing or measuring
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01D—NON-POSITIVE DISPLACEMENT MACHINES OR ENGINES, e.g. STEAM TURBINES
    • F01D5/00—Blades; Blade-carrying members; Heating, heat-insulating, cooling or antivibration means on the blades or the members
    • F01D5/005—Repairing methods or devices
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01D—NON-POSITIVE DISPLACEMENT MACHINES OR ENGINES, e.g. STEAM TURBINES
    • F01D5/00—Blades; Blade-carrying members; Heating, heat-insulating, cooling or antivibration means on the blades or the members
    • F01D5/12—Blades
    • F01D5/14—Form or construction
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01D—NON-POSITIVE DISPLACEMENT MACHINES OR ENGINES, e.g. STEAM TURBINES
    • F01D5/00—Blades; Blade-carrying members; Heating, heat-insulating, cooling or antivibration means on the blades or the members
    • F01D5/12—Blades
    • F01D5/14—Form or construction
    • F01D5/18—Hollow blades, i.e. blades with cooling or heating channels or cavities; Heating, heat-insulating or cooling means on blades
    • F01D5/187—Convection cooling
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F05—INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
    • F05D—INDEXING SCHEME FOR ASPECTS RELATING TO NON-POSITIVE-DISPLACEMENT MACHINES OR ENGINES, GAS-TURBINES OR JET-PROPULSION PLANTS
    • F05D2230/00—Manufacture
    • F05D2230/20—Manufacture essentially without removing material
    • F05D2230/21—Manufacture essentially without removing material by casting
    • F05D2230/211—Manufacture essentially without removing material by casting by precision casting, e.g. microfusing or investment casting
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F05—INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
    • F05D—INDEXING SCHEME FOR ASPECTS RELATING TO NON-POSITIVE-DISPLACEMENT MACHINES OR ENGINES, GAS-TURBINES OR JET-PROPULSION PLANTS
    • F05D2230/00—Manufacture
    • F05D2230/20—Manufacture essentially without removing material
    • F05D2230/23—Manufacture essentially without removing material by permanently joining parts together
    • F05D2230/232—Manufacture essentially without removing material by permanently joining parts together by welding
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F05—INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
    • F05D—INDEXING SCHEME FOR ASPECTS RELATING TO NON-POSITIVE-DISPLACEMENT MACHINES OR ENGINES, GAS-TURBINES OR JET-PROPULSION PLANTS
    • F05D2260/00—Function
    • F05D2260/20—Heat transfer, e.g. cooling
    • F05D2260/203—Heat transfer, e.g. cooling by transpiration cooling
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F05—INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
    • F05D—INDEXING SCHEME FOR ASPECTS RELATING TO NON-POSITIVE-DISPLACEMENT MACHINES OR ENGINES, GAS-TURBINES OR JET-PROPULSION PLANTS
    • F05D2260/00—Function
    • F05D2260/20—Heat transfer, e.g. cooling
    • F05D2260/221—Improvement of heat transfer
    • F05D2260/2212—Improvement of heat transfer by creating turbulence
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F05—INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
    • F05D—INDEXING SCHEME FOR ASPECTS RELATING TO NON-POSITIVE-DISPLACEMENT MACHINES OR ENGINES, GAS-TURBINES OR JET-PROPULSION PLANTS
    • F05D2260/00—Function
    • F05D2260/20—Heat transfer, e.g. cooling
    • F05D2260/221—Improvement of heat transfer
    • F05D2260/2214—Improvement of heat transfer by increasing the heat transfer surface
    • F05D2260/22141—Improvement of heat transfer by increasing the heat transfer surface using fins or ribs
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T29/00—Metal working
    • Y10T29/49—Method of mechanical manufacture
    • Y10T29/49316—Impeller making
    • Y10T29/49336—Blade making
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T29/00—Metal working
    • Y10T29/49—Method of mechanical manufacture
    • Y10T29/49316—Impeller making
    • Y10T29/49336—Blade making
    • Y10T29/49339—Hollow blade
    • Y10T29/49341—Hollow blade with cooling passage

Definitions

  • the present invention relates to a method for manufacturing turbine engine components having an airfoil portion with a cooling microcircuit and a turbine engine component formed thereby.
  • Turbine engine components such as high pressure turbine blade airfoils, encounter harsh environments and are subject to extremely hot gases from other components such as burners.
  • the airfoil portions of these components experience a varying thermal load.
  • the airfoil portions need to be cooled locally.
  • the mechanisms for cooling the airfoil portions vary from design to design but there is a certain optimum arrangement that minimizes cooling flow.
  • cooling microcircuits in the airfoil portions of turbine engine components may be formed using refractory metal cores in a double wall design.
  • the refractory metal core material has an elevated melting temperature, making it desirable for processing during investment casting before being leached-out and forming internal microcircuit passageways within a wall of the cast component. While this technique is effective to form very desirable cooling microcircuits, it is difficult to inspect the microcircuits thus formed.
  • a method of forming a turbine engine component and a turbine engine component having the features of the preamble of claim 1, respectively of claim 12, is disclosed in EP-A-990481 .
  • Other methods of manufacture which include formation of sections of cooling passages in halves of airfoils are disclosed in JP 01313602 A and US-A-5392515 .
  • One aim of the present invention is to provide a method for forming a turbine engine component having an airfoil portion with cooling microcircuits that can be inspected without great difficulty.
  • a method for manufacturing a turbine engine component having an airfoil portion is provided as set forth in claim 1.
  • the method further preferably comprises forming a second half of the airfoil portion of the turbine engine component, forming a second cooling microcircuit having at least one passageway on an exposed internal wall surface of the second half of the airfoil portion, and placing the first half in an abutting relationship with the second half after the microcircuits have been formed and inspected.
  • the method of the present invention is quite advantageous in that an airfoil portion for a turbine engine component, such as a high pressure turbine blade, can be easily manufactured with microcircuit type cooling features.
  • a turbine engine component is provided as set forth in claim 12.
  • FIG. 1 illustrates an airfoil portion 10 of a turbine engine component, such as a high pressure turbine blade.
  • the airfoil portion 10 has a first half 12 and a second half 14.
  • the airfoil halves 12 and 14 may have any desired shape and may include internal structures, such as ribs 16 and 18. As will be discussed hereinafter, the airfoil halves 12 and 14 are formed so that respective internal wall surfaces 20 and 22 are exposed.
  • the airfoil halves 12 and 14 may be cast in any suitable manner known in the art from any suitable material known in the art.
  • the airfoil halves 12 and 14 may be formed from a nickel-based, cobalt-based, iron-based, or titanium-based alloy material.
  • the airfoil halves 12 and 14 are formed using a casting unit 24 such as that shown in FIG. 2 .
  • the casting unit 24 is unique in that it casts a structure 100, such as that shown in FIG. 5 , from which the turbine engine component can be formed.
  • the structure 100 may include a platform 102 having a leading edge 104, a trailing edge 106, a first side edge 108, and a second side edge 110.
  • the structure 100 also may include the first airfoil half 12 along the edge 108 and the second airfoil half 14 along the edge 110.
  • the structure 100 may also have features such as an attachment portion (not shown) formed on an underside of the platform 102 and fillets 112 formed between an exterior surface 114 or 116 of a respective one of the airfoil halves 12 and 14 and a surface of the platform 102.
  • an attachment portion (not shown) formed on an underside of the platform 102 and fillets 112 formed between an exterior surface 114 or 116 of a respective one of the airfoil halves 12 and 14 and a surface of the platform 102.
  • One of the advantages to the structure 100 is that the internal wall surfaces 20 and 22 are exposed prior to the halves 12 and 14 of adjacent ones of the structures 100 being joined together. Because the internal wall surfaces 20 and 22 are exposed, one or more cooling microcircuits can be easily formed on the internal wall surfaces 20 and 22. The shape of the microcircuits can be selected to optimize the cooling needs of the airfoil portion 10 in its intended environment.
  • the casting unit 24 is separable along the lines A - A and B - B which define the split line 26 for the airfoil portion 10.
  • the casting unit 24 is different from prior art casting units wherein the airfoil portion was formed without any split lines. Instead, there was a parting line in a center portion of the platform. Forming the turbine component structures in this manner was disadvantageous in that there were a plurality of leakage paths between adjacent platform portions which required the use of numerous seals. This disadvantage is overcome by the casting unit 24 used to form the structures 100 because the platform portions are now cast as a single unit eliminating the need for seals as it is configured today along the platform edges.
  • the casting units 24 may be filled with a molten material in any suitable manner known in the art. That is, create the mold with wax, shell the mold, liquefy the wax, and pour the liquid metal in the pattern (empty spaces) during casting.
  • FIG. 3 illustrates one form of a split line 26 which can be used in the casting units 24 in carrying out the present invention to form the airfoil halves 12 and 14.
  • FIG. 4 illustrates an alternative embodiment of a split line 26' which can be used in the casting units 24 carrying out the present invention to form the airfoil halves 12 and 14.
  • a first cooling microcircuit 120 can be formed on the internal wall surface 20 using any suitable technique known in the art.
  • the microcircuit 120 can be a cast structure if desired where a number of elements 122, such as pedestal structures, which define one or more passageways for a cooling fluid, as well as an inlet 124 and an outlet 126 for the passageways, are cast.
  • the microcircuit 120 can be machined, using any suitable technique known in the art, to form the elements 122 which define the passageway(s) for the cooling fluid and the inlet 124 and the outlet 126 for the passageway(s).
  • the exact configuration of the microcircuit 120 is a function of the end use of the turbine engine component.
  • FIGS. 7A and 7B illustrate exemplary cooling microcircuit configurations which can be used in the present invention. An advantage to forming the microcircuit 120 in this manner is that it can be easily inspected prior to assembly of the airfoil portion 10.
  • a cover plate 128 is placed over it and joined to one or more of the elements 122.
  • a second microcircuit 120' may be formed on the internal wall surface 22 of the airfoil half 14.
  • the second microcircuit 120' may be formed using any suitable technique known in the art and may have any number of cooling passageways.
  • the microcircuit 120' also has a plurality of elements 122' defining one or more passageways for the cooling fluid, and an inlet 124' and an outlet 126' for the cooling fluid passageway(s). After or before the microcircuit 120' has been inspected, a cover plate 128' is placed over the microcircuit 120' and joined to the elements 122'.
  • the cover plates 128 and 128' may be joined to the elements 122 and 122' of the respective microcircuits 120 and 120' using any suitable technique known in the art such as brazing, diffusion bonding, and welding. It should be noted that one advantage to this approach is that the cover plates 128 and 128' can easily be replaced if dirt plugging becomes a problem in the field.
  • the structures 100 are ready to be installed in a support structure (not shown) such as a disk. Adjacent ones of the structures 100 form an airfoil portion 10 by placing the airfoil half 12 in an abutting relationship with the second airfoil half 14 wherein mating surfaces 40, 42, and 44 on the airfoil half 12 contact or abut mating surfaces 46, 48, and 50 on the airfoil half 14. If desired, the airfoil halves 12 and 14 may be joined to each other using any suitable means known in the art such as by mechanical devices, diffusion bonding, transient liquid phase bonding, or solid state bonding.
  • the technology employed in the present invention provides a simple means to implement microcircuit features in an airfoil design without the complexity associated with double-wall cooling designs.
  • the present invention facilitates internal inspection, resolves the plugging problems, and improves performance by eliminating numerous leakage paths.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Turbine Rotor Nozzle Sealing (AREA)
EP06254317.8A 2005-08-31 2006-08-17 Turbine engine component with a cooling microcircuit and corresponding manufacturing method Revoked EP1760264B1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US11/217,703 US7311497B2 (en) 2005-08-31 2005-08-31 Manufacturable and inspectable microcircuits

Publications (3)

Publication Number Publication Date
EP1760264A2 EP1760264A2 (en) 2007-03-07
EP1760264A3 EP1760264A3 (en) 2010-04-21
EP1760264B1 true EP1760264B1 (en) 2015-07-22

Family

ID=36972748

Family Applications (1)

Application Number Title Priority Date Filing Date
EP06254317.8A Revoked EP1760264B1 (en) 2005-08-31 2006-08-17 Turbine engine component with a cooling microcircuit and corresponding manufacturing method

Country Status (8)

Country Link
US (1) US7311497B2 (zh)
EP (1) EP1760264B1 (zh)
JP (1) JP2007064213A (zh)
KR (1) KR20070025999A (zh)
CN (1) CN1970996A (zh)
CA (1) CA2558479A1 (zh)
SG (1) SG130130A1 (zh)
TW (1) TW200710321A (zh)

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EP1975373A1 (en) * 2007-03-06 2008-10-01 Siemens Aktiengesellschaft Guide vane duct element for a guide vane assembly of a gas turbine engine
US20090060714A1 (en) * 2007-08-30 2009-03-05 General Electric Company Multi-part cast turbine engine component having an internal cooling channel and method of forming a multi-part cast turbine engine component
US8157527B2 (en) * 2008-07-03 2012-04-17 United Technologies Corporation Airfoil with tapered radial cooling passage
US8348614B2 (en) * 2008-07-14 2013-01-08 United Technologies Corporation Coolable airfoil trailing edge passage
US8572844B2 (en) * 2008-08-29 2013-11-05 United Technologies Corporation Airfoil with leading edge cooling passage
US8303252B2 (en) * 2008-10-16 2012-11-06 United Technologies Corporation Airfoil with cooling passage providing variable heat transfer rate
US8109725B2 (en) * 2008-12-15 2012-02-07 United Technologies Corporation Airfoil with wrapped leading edge cooling passage
US8007242B1 (en) * 2009-03-16 2011-08-30 Florida Turbine Technologies, Inc. High temperature turbine rotor blade
US8052391B1 (en) * 2009-03-25 2011-11-08 Florida Turbine Technologies, Inc. High temperature turbine rotor blade
US8070450B1 (en) * 2009-04-20 2011-12-06 Florida Turbine Technologies, Inc. High temperature turbine rotor blade
US9915154B2 (en) * 2011-05-26 2018-03-13 United Technologies Corporation Ceramic matrix composite airfoil structures for a gas turbine engine
US9486853B2 (en) 2012-09-14 2016-11-08 United Technologies Corporation Casting of thin wall hollow airfoil sections
US9404654B2 (en) * 2012-09-26 2016-08-02 United Technologies Corporation Gas turbine engine combustor with integrated combustor vane
US10030524B2 (en) 2013-12-20 2018-07-24 Rolls-Royce Corporation Machined film holes
US9669458B2 (en) 2014-02-06 2017-06-06 General Electric Company Micro channel and methods of manufacturing a micro channel
US10260353B2 (en) 2014-12-04 2019-04-16 Rolls-Royce Corporation Controlling exit side geometry of formed holes
US10174620B2 (en) 2015-10-15 2019-01-08 General Electric Company Turbine blade
GB201720829D0 (en) 2017-12-14 2018-01-31 Rolls Royce Plc Aerofoil and method of manufacture
GB201720828D0 (en) * 2017-12-14 2018-01-31 Rolls Royce Plc Aerofoil
JP7234006B2 (ja) * 2019-03-29 2023-03-07 三菱重工業株式会社 高温部品及び高温部品の製造方法

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EP1447525A1 (fr) 2003-02-13 2004-08-18 Snecma Moteurs Réalisation de turbines pour turbomachines ayant des aubes à fréquences de résonance ajustées différentes et procédé d'ajustement de la fréquence de résonance d'une aube de turbine

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EP0990771A1 (en) 1998-09-28 2000-04-05 General Electric Company Trapped insert turbine airfoil
US20020108734A1 (en) 2000-12-22 2002-08-15 Alexander Beeck Process for the rapid production of hollow components of flow machines for manufacturing development
EP1447525A1 (fr) 2003-02-13 2004-08-18 Snecma Moteurs Réalisation de turbines pour turbomachines ayant des aubes à fréquences de résonance ajustées différentes et procédé d'ajustement de la fréquence de résonance d'une aube de turbine

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Also Published As

Publication number Publication date
CA2558479A1 (en) 2007-02-28
EP1760264A2 (en) 2007-03-07
EP1760264A3 (en) 2010-04-21
US7311497B2 (en) 2007-12-25
KR20070025999A (ko) 2007-03-08
CN1970996A (zh) 2007-05-30
JP2007064213A (ja) 2007-03-15
SG130130A1 (en) 2007-03-20
US20070237638A1 (en) 2007-10-11
TW200710321A (en) 2007-03-16

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